Answer
(a) KOH is a strong base. $K^+$ and $OH^-$.
(b) $Mg(OH)_2$ is a strong base. $Mg^{2+}$ and 2 $OH^-$
(c) $HClO$ is a weak acid. $ClO^-$ and $H^+$
(d) $HBr$ is a strong acid. $Br^-$ and $H^+$
(e) $LiOH$ is a strong base. $Li^+$ and $OH^-$
(f) $H_2SO_3$ is a weak acid. $H^+$ and $HS{O_4}^-$
Work Step by Step
1. Separate each compound by the ions they form.
2. If the compound contains a $H^+$ ion, it is an acid, if it contains a $OH^-$, it is a base.
3. See the tables of strong acids and base (Pages 358 and 359), if the compound is not there, it is a weak acid/base.